Echoes are sounds that encounter and rebound from reflecting surfaces, and the experiences which follow are those caused by such reflections. For these experiences to be counted as Echo Experiences they require an initial primary sound. An echo is then to re-experience the primary sound, and be related to perhaps looking at an image in a mirror.
Sounds may be theoretically divided into two variants, vibration events, and disturbance events. These are defined by the interpretation on the effect of impact of the surroundings, either reacting upon the vibration of an object or interacting with or disrupting a surrounding medium.
Either philosophical interpretation suggests that the sound is not a property, but rather that it is an event. The pressure waves in the medium transmit information about the event, but the sound is not the waves. In this way, the primary sound and the echo are then interpreted as separate events, though in reality we are simply re-experiencing the primary sound with distortion of time, place, and qualities. The question of how these events are to be interpreted as distinctive in their own way depends on the degree of distortion of both qualities of the sound and the reflecting surface. The elements of time and place relate also, determining the gap which makes the second sound singular from its original, and the position of both the receiver and the reflecting surface. The greater the arrival delay and the qualities of the reflecting surface will allow for the receiver to experience a higher degree of determining that each sound is unrelated.
Yet the echo is just the primary sound, albeit with distortions of time, place, and qualities. The echo then is more suited to being referred to as an illusion, caused by the behavior of sound and the way in which it is perceptually localized. The distinction between the primary sound and the echo depends upon the delays of arrival-time upon the receiver.
What the receiver is experiencing is in actuality an event from the past. This experience then includes the concept of temporal illusion. So then why would the receiver determine that each sound is separate?
To justify this occurrence, let us explore briefly the concept of a star at supernova many light-years away. When the star goes supernova, and flitters away in a spectacular display, we will see it here through our telescopes, or perhaps as a bright spark in the night sky. What we are experiencing is in fact a past event, yet we determine that we are experiencing it in the present. As with echoes and primary sounds, what is occurring is the perception that past events are in fact present events. In reality we are only experiencing a singular event with special tricks to create the illusion of separate occurrences.
Experiencing an echo is like bending time and space – an experience of temporal illusion.
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